The original question had to be edited down. I think that the exploration of the unusual is a part of Romanticism's essence. To be able to "look into the life of things" is an experience that could only happen with what is unusual. For the Romantics, being able to praise the unusual is what made the Romantic sensibility better than anything else that could be deemed as "normal." Consider Wordsworth's "The Solitary Reaper" as a part of this. In the poem, the speaker, presumably Wordsworth, is entranced by the sound of a woman in the fields singing a song. His creativity is triggered by this unusual event. Had she been silent, his own creativity would not have been activated to such an extent. In the song, the speaker's mind wanders as to what the lyrics of the song could be conveying. It is here in which the unusual connects to creativity.
The element of the unusual, or something out of the ordinary, is the basis of Shelley's "Ozymandias." In this poem, the focus is a statue in which "Two vast and trunkless legs of stone/ Stand in the desert." This helps to convey the unusual, something not immediately encountered in day to day life. In this unusual event, the poem's creative element is allowed to take form and flight. The poem is able to bring out how the pursuit of power is an illusory one if it is rooted in one's own self- indulgence. From something unusual, a creative exploit and endeavor is connected. In "Ozymandias," the creative statements about individual temporality and political transience are only facilitated through the unusual condition of the statue.